Commit 6ca4f65e authored by Jeff Moyer's avatar Jeff Moyer Committed by David S. Miller

[NETPOLL]: Set poll_owner to -1 before unlocking in netpoll_poll_unlock()

This trivial patch moves the assignment of poll_owner to -1 inside of
the lock.  This fixes a potential SMP race in the code.
Signed-off-by: default avatarJeff Moyer <jmoyer@redhat.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent f31f5f05
...@@ -53,8 +53,8 @@ static inline void netpoll_poll_lock(struct net_device *dev) ...@@ -53,8 +53,8 @@ static inline void netpoll_poll_lock(struct net_device *dev)
static inline void netpoll_poll_unlock(struct net_device *dev) static inline void netpoll_poll_unlock(struct net_device *dev)
{ {
if (dev->np) { if (dev->np) {
spin_unlock(&dev->np->poll_lock);
dev->np->poll_owner = -1; dev->np->poll_owner = -1;
spin_unlock(&dev->np->poll_lock);
} }
} }
......
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment